Press-button.



- A. MANN.

t PRESS BUTTON; APPLICATION HLED M AY :21, 1912.

.11'28Q3-41`. y l- Patented 11"elo.'16,1915.`

/'n esses: Jn vez ZH@ UNITED sTATEs rATENT OFFICE.

ALFRED MANN, 0F BARMEN, GERMANY, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THFIRM OF WALDES & KO., 0F DRESDEN, GERMANY. f

PRESS-BUTTON.

Application www, 1912- Sealm'mm REISSUED lo all whom it may concern.'

Be it known that I, ALFRED MANN, residing at Schtzenstrasse 51, Barmen,Rhenish like clothing and when a lateral pull is eX- erted thereon. Toovercome this disadvantage I have constructed the cap and stud inenlarged scale on which- Figure 1 is a vertical section of the completebutton. Fig. 2 is a top view and Fig. 3 is a vertical section showingthe operation of the button when exposed to lateral pull or traction.

Like letters of reference indicate like parts in the drawings.

Referring to the drawings the button consists of a plate a on which isformed the cap b. This cap is of particular shape as seen in thedrawings, it is made ball like forming in its interior a shoulder or thelike s.

c is the usual wire spring which may be made of one piece as shown or oftwo sep- A arate pieces and clamped to the plate by Specification ofLetters Patent.

Patented Feb. 1e, 1915.

means o'f the rim, its Shanks 01 engage recesses in the cap as 'shown inFigs. 1 and 2.

al is the plate of the male member which is provided with the stud e.This stud is not made cylindrical as usually buthas a ball like shapeand is of such a diameter so as l to closely fit the entrance in the capmember as shown by the dotted lines in Fig. 1.

My new buttonhas the advantage, that it can be opened only when drawnasunder in axial direction as shown'by the arrow. Any

other lateral pull or traction will not separatethe members. In such acase Fig.- 3, the head e bears against the supports s and the rim oredge d1 bears against the plate a and it is therefore vquite impossibleto open the button. It may be mentioned that in my button the spring maybe made not so strong as in ordinary buttons in which said spring shall.prevent the selfopening of the button.

What I claim is A separable fastener comprising a plate having anannular substantially tubular flanged member extending upwardlytherefrom, a central cap, said cap having'an enlarged portion and acontracted portion forming shoulders adjacent the plate, said shouldershaving cut out portions, a spring member having curved portionsterminating in relatively straight portions, the curved yportionsproviding resiliency to the spring, V and the straight portions beingpositioned in the cut out portions of the shoulders whereby a portion ofthe spring extends beyond the shoulders, a member carrying a stud,

said stud adapted to be positioned in the cap and the outer walls of thestud adapted to engage the straight portions of the spring,

substantially as described. v

ALFRED MANN. [Ls] Witnesses: 1

HELEN NUFER, ALBERT N um.

